Are you sure you are highlighting the “When” box (at the far left), and not the “Check if” box (in the middle)? Selecting the “When” box in the new rule builder shows me “Task is overdue” as a choice:
If you don’t see it:
Try these troubleshooting steps, then please 1) Report your problem by going to Report a Bug, clicking the New Topic button at the right, and following the instructions, or 2) To create a support ticket, go to www.asana.com/support (make sure you are logged in to Asana) > click the chat icon at the bottom right > type “speak to an agent” > click “Yes” > click “Something Else” > click “Create a support ticket.”
Thanks,
Larry